The prime difficulty encountered during the conservation of the classical statue of the goddess Cybele was the removal of secondary stratification from its surface. Some, such as the silicate-calcite stratification, were harder than the marble out of which the statue had been executed. The application of laser beams proved to be a much more effective alternative to chemical and physical methods. The laser technique facilitated cleaning the marble surface while preserving the patina, a procedure impossible in the case of traditional methods. The supplementation of missing fragments used thermoplastic putties based on modified Paraloid B-72. This modification made it feasible to lower the temperature rendering Paraloid B-72 more flexible to a level lower than 100°C, safe for the crystalline structure of the marble.
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